Artesyn MOTLoad Firmware Package User's Manual (Febru User Manual Page 275
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Safe Start and Alternate Boot Image
MOTLoad Firmware Package User’s Manual (6806800C24D)
275
E.6.1 Checksum Algorithm
The checksum algorithm is a simple unsigned word addition; that is, 4-byte addition, of each
word location in the image. The image must be word aligned. The content of the checksum
location in the header is not part of the checksum calculation. The algorithm is implemented
using the following code:
Unsigned int checksum(
Unsigned int *startPtr,/* starting address */
Unsigned int endPtr/* ending address */
) {
unsigned int checksum=0;
while (startPtr < endPtr) {
checksum += *startPtr;
startPtr++;
}
return(checksum);
}
E.6.2 Boot Image Flags
The image flags define various bit options that control how the boot loader executes the
image. These bit definitions are defined in the following table.
ImageOffset unsigned integer 1 Offset from header start to
entry
ImageFlags unsigned integer 1 Refer to Boot Image Flags on
page 275
ImageVersion unsigned integer 1 User defined
Reserved unsigned integer 8 Reserved for expansion
Name Type Size Notes
Table E-1 MOTLoad Image Flags
Name Value Interpretation
COPY_TO_RAM 0x00000001 Copy image to RAM at ImageRamAddress
before execution
- MOTLoad Firmware Package 1
- Trademarks 2
- Contact Address 2
- Contents 10
- List of Tables 11
- About this Manual 13
- Abbreviations 14
- Conventions 14
- Summary of Changes 16
- Introduction 19
- 1.1.4 MOTLoad Tests 20
- Using MOTLoad 23
- 2.1.2 Command Line Help 24
- 2.1.3 Command Line Rules 25
- 2.1.4 Command History Buffer 26
- 2.1.5 pseudo-Vi Mode 26
- 2.3 User Download Buffer 31
- 2.4.1 Error Message Formats 32
- 2.4.2 IOCTL Codes (Block) 32
- 3.1.2 as 41
- 3.1.3 bcb bch bcw 43
- 3.1.4 bdTempShow 44
- 3.1.5 bfb bfh bfw 45
- 3.1.6 blkCp 46
- 3.1.7 blkFmt 48
- 3.1.8 blkRd 49
- 3.1.9 blkShow 51
- 3.1.10 blkVe 52
- 3.1.11 blkWr 54
- 3.1.12 bmb bmh bmw 56
- 3.1.13 br 57
- 3.1.14 bsb bsh bsw 58
- 3.1.15 bvb bvh bvw 59
- 3.1.16 cdDir 60
- 3.1.17 cdGet 62
- 3.1.18 clear 64
- 3.1.19 cm 65
- 3.1.20 csb csh csw 67
- 3.1.21 csUserAltBoot 68
- 3.1.22 devShow 69
- 3.1.23 diskBoot 70
- 3.1.24 docBoot 73
- 3.1.25 docProgram 75
- 3.1.26 docRead 77
- 3.1.27 downLoad 78
- 3.1.28 ds 80
- 3.1.29 echo 82
- 3.1.30 elfLoader 83
- 3.1.31 errorDisplay 86
- 3.1.32 eval 88
- 3.1.33 execProgram 90
- 3.1.34 fatDir 91
- 3.1.35 fatGet 93
- 3.1.36 fdShow 95
- 3.1.37 flashLock 97
- 3.1.38 flashProgram 100
- MOTLoad Commands 101
- 3.1.39 flashShow 103
- 3.1.40 flashUnlock 104
- 3.1.41 gd 107
- 3.1.42 gevDelete 108
- 3.1.43 gevDump 109
- 3.1.44 gevEdit 111
- 3.1.45 gevInit 112
- 3.1.46 gevList 113
- 3.1.47 gevShow 114
- 3.1.48 gn 115
- 3.1.49 go 116
- 3.1.50 gt 117
- 3.1.51 hbd 118
- 3.1.52 hbx 119
- 3.1.53 help 120
- 3.1.54 l2CacheShow 122
- 3.1.55 l3CacheShow 123
- 3.1.56 mdb mdh mdw 124
- 3.1.57 memShow 125
- 3.1.58 mmb mmh mmw 126
- 3.1.62 netBoot 132
- 3.1.63 netShow 135
- 3.1.64 netShut 137
- 3.1.65 netStats 138
- 3.1.66 noCm 140
- 3.1.67 pciDataRd 141
- 3.1.68 pciDataWr 142
- 3.1.69 pciDump 143
- 3.1.70 pciShow 144
- 3.1.71 pciSpace 146
- 3.1.72 ping 148
- 3.1.73 portSet 150
- 3.1.74 portShow 152
- 3.1.75 rd 153
- 3.1.76 reset 154
- 3.1.77 rs 155
- 3.1.78 set 156
- 3.1.79 sromRead 158
- 3.1.80 sromWrite 160
- 3.1.81 sta 162
- 3.1.82 stl 164
- 3.1.83 stop 166
- 3.1.84 taskActive 167
- 3.1.85 tc 169
- 3.1.86 td 170
- 3.1.87 testDisk 171
- 3.1.88 testDocHwInt 173
- 3.1.89 testEnetPtP 174
- 3.1.90 testNvramRd 175
- 3.1.91 testNvramRdWr 176
- 3.1.92 testRam 177
- 3.1.93 testRamAddr 179
- 3.1.94 testRamAlt 181
- 3.1.95 testRamBitToggle 182
- 3.1.96 testRamBounce 184
- 3.1.97 testRamCodeCopy 185
- 3.1.98 testRamEccMonitor 186
- 3.1.99 testRamMarch 187
- 3.1.100 testRamPatterns 188
- 3.1.101 testRamPerm 189
- 3.1.102 testRamQuick 190
- 3.1.103 testRamRandom 191
- 3.1.104 testRtcAlarm 192
- 3.1.105 testRtcReset 193
- 3.1.106 testRtcRollOver 194
- 3.1.107 testRtcTick 195
- 3.1.108 testSerialExtLoop 196
- 3.1.109 testSerialIntLoop 197
- 3.1.110 testStatus 198
- 3.1.111 testSuite 200
- 3.1.112 testSuiteMake 203
- 3.1.113 testThermoOp 205
- 3.1.114 testThermoQ 206
- 3.1.115 testThermoRange 207
- 3.1.116 testWatchdogTimer 208
- 3.1.117 tftpGet 209
- 3.1.118 tftpPut 212
- 3.1.119 time 215
- 3.1.120 transparentMode 217
- 3.1.121 tsShow 219
- 3.1.122 upLoad 220
- 3.1.123 version 222
- 3.1.124 vmeCfg 223
- 3.1.125 vpdDisplay 225
- 3.1.126 vpdEdit 227
- 3.1.127 wait 229
- 3.1.128 waitProbe 230
- MOTLoad Non-Volatile Data 231
- A.2.4 Restoring the Archive 233
- A.2.5 Editing VPD 234
- A.3.2 Reserved GEVs 236
- A.3.2.2 Network GEVs 238
- A.3.2.4 Disk Boot Option GEV 239
- A.3.2.5 Boot Results GEV 239
- A.3.2.6 IDE GEV 240
- A.3.2.7 SCSI GEV 241
- A.3.2.8 Test Suite GEVs 241
- A.3.2.10 Other GEVs 242
- A.3.3 Viewing GEV Values 243
- A.3.4 Viewing GEV Labels 243
- A.3.5 Creating GEVs 244
- A.3.6 Editing GEVs 245
- A.3.7 Deleting GEVs 245
- Remote Start 247
- B.2.11 VME Remote Start 256
- VME Configuration Parameters 263
- C.4 Editing VME Settings 264
- C.5 Deleting VME Settings 265
- Auto Boot 267
- D.2 Auto Boot From a Disk 268
- Appendix E 271
- E.1 Overview 271
- E.2 Safe Start 271
- E.3 Alternate Boot Images 272
- E.4 Firmware Startup Sequence 272
- E.6 Valid Boot Images 274
- E.6.1 Checksum Algorithm 275
- E.6.2 Boot Image Flags 275
- Related Documentation 279
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